KR20180102501A - Home cinema system devices - Google Patents

Abstract

A television (210, 310) and a home cinema device (230, 330) work together in various embodiments to render an audio signal including at least a left channel (L), a right channel (R), and a center channel(C). The left and right channels are rendered by left and right speakers (340) coupled to the home cinema devices (230, 330), while the center channel is rendered by the left and right speakers (215, 315) of the televisions (210, 310). The television (210) can receive the audio signal, decode and render the center channel, and send the audio, possibly re-encoded left and right channels, to the home cinema device (230). The television (210) can also send the audio to the home cinema device (230), and return the re-encoded center channel for rendering on the television. Alternatively, the home cinema device can receive the audio signal and provide the re-encoded center channel to the television. In an alternative, the center channel can be rendered by a sound bar coupled to the television.

Description

Home cinema system devices {HOME CINEMA SYSTEM DEVICES}

This disclosure relates generally to home cinema, and more particularly to sound rendering in home cinema systems.

This column is intended to introduce the reader to various aspects of the related art that may be described below and / or may be associated with various aspects of the present disclosure as claimed below. This discussion is believed to be helpful to the reader in providing background information that facilitates a better understanding of the various aspects of the present disclosure. It is therefore to be understood that these statements are to be read in this light, rather than in the recognition of the prior art.

To provide a better listening experience for television viewers, one solution was to add external speakers to the television, often driven by so-called home cinema or home theater devices. These external speakers take the place of the internal left and right speakers of the television. Systems with more than two loudspeakers are known and are often named by the number of speakers and bass loudspeakers, e.g., 3.1 represents three speakers and one bass speaker, 5.1 represents five speakers and one bass speaker Represents a speaker. Other names for multi-channel systems are Ambisonic or surroundsound. Typically, such systems include a center speaker for speech intelligibility.

Conventional home cinema (also referred to as home theater) systems include devices that include a screen for displaying video, and an amplifier for acquiring a sound signal to be sent to multiple speakers to render the audio. The screen may be a flat surface on which the device projects video, but may also be a screen of a conventional television.

Home cinema systems as described above are typically accommodated in two or more devices connected via high-definition multimedia interface (HDMI) cables, but sometimes additional audio cables, data links or Ethernet connections are used.

HDMI is an audio / video interface described in a standard that includes several parts:

DDC: Display Data Channel is a communication channel based on the I ² C bus specification. HDMI uses an Enhanced Display Data Channel (E-EDID) used by an HDMI source device to learn what audio / video formats are supported by reading Enhanced Extended Display Identification Data (E-EDID) ≪ / RTI > DDC).

CEC: Consumer Electronics Control is an HDMI feature designed to allow users to command and control up to 15 CEC-enabled devices connected via HDMI. This facilitates the transmission of the remote control signals. In addition, the CEC allows individual CEC-enabled devices to command and control each other without user intervention. CEC is bi-directional.

TMDS: Transition-Minimized Differential Signaling on HDMI Interleaves video, audio and ancillary data using three different packet types called video data periods, Data Island Periods and control periods . During the video data period, pixels of the active video line are transmitted. During a data island period (occurring during horizontal and vertical retrace intervals), audio and ancillary data are transmitted within a series of packets. The control period occurs between the video data period and the data island period. TMDS is unidirectional.

ARC: Audio Reverse Channel is a unidirectional audio link to replace other cables between the TV and the A / V receiver or home cinema. This direction is used when the TV is the source of video and audio streams instead of other equipment. Without ARC, the audio output from the TV must be routed to the speaker system by another cable, typically a TOS-Link or coaxial cable. It uses an additional cable.

HEC: HDMI-Ethernet Channel provides bidirectional Ethernet communication. It is combined with ARC for HEAC (HDMI Ethernet Audio Connection).

Home cinema systems are often identified by the number of speakers they contain. For example, as shown in FIG. 1, a system 100 includes a speaker 110, typically on the front or top of the screen, to the left of the screen 140, A center speaker 120 located below, and a base speaker 130 (whose position is less stringent). The center speaker 120 and the base speaker 130 may be disposed in the same physical unit. The 5.1 system further includes two speakers, and the 7.1 system further includes two speakers.

A problem with conventional home cinema systems is that it may be difficult to place the center speaker when the video is rendered on a television. For example, there may be no space on the ground just before the television, and in some cases the speaker may block the screen.

Chinese Utility Model CN 200959634 proposes a home cinema system with internal left and right speakers of a television that work together as a center speaker. However, this solution requires hard-wiring the home cinema system and these speakers. In addition, this solution does not seem to provide any solution to the possible problems that arise with respect to delay, insufficient mixing, and volume.

It will be appreciated that it would be desirable to have a solution that overcomes at least some of the conventional problems associated with center speakers in home cinema systems.

In a first aspect, the present principles relate to a television configured to connect to a sound rendering device, wherein the television decodes a first audio signal comprising at least a left channel, a right channel and a center channel, A decoder configured to provide a decoded center channel and a second audio signal for encoding the decoded left channel and decoded right channel to render the sound on the second speakers and outputting to the sound rendering device Lt; / RTI >

In a second aspect, the present principles relate to a television configured to connect to a sound rendering device, wherein the television decodes an audio signal comprising at least a left channel, a right channel and a center channel, and for rendering on the first speakers A decoder configured to provide a decoded center channel, and an output interface configured to output an audio signal to the sound rendering device to render the sound on the second speakers.

In a third aspect, the present principles relate to a television configured to connect to a sound rendering device, the television comprising a unit configured to receive a first audio signal comprising at least a left channel, a right channel and a center channel, An output interface configured to output a first audio signal to the sound rendering device to render the sound, and a second audio signal-second audio signal from the sound rendering device to the center channel, or an additional left channel obtained from the center channel, And a decoder configured to decode the second audio signal to render at least one audio channel for rendering on the at least one first speaker.

Various embodiments of the third aspect include the following.

The second audio signal includes a center channel and the television further comprises a digital sound processor unit configured to process the center channel for rendering on the left and right speakers of the first speakers.

The second audio signal includes an additional left channel and an additional right channel, and the decoder is configured to provide a decoded left channel to the left speaker and a decoded right channel to the right speaker among the first speakers.

Various embodiments of the first to third aspects include the following.

The television further comprises a digital sound processor unit for sound processing of the audio channels to be provided to the first speakers.

The first speakers include the inner left and right speakers of the television.

The first speakers include the left and right speakers of the sound bar outside the television.

The first audio signal or the second audio signal further includes a base channel to be rendered on the base speaker among the first speakers.

In a fourth aspect, the present principles relate to a sound rendering device configured to connect to a television, wherein the sound rendering device receives a first audio signal comprising at least a left channel, a right channel and a center channel, A decoder configured to decode and obtain channels, a left channel and a right channel coupled to the left and right speakers coupled to the sound rendering device, and an encoder configured to encode the center channel into a second audio signal for output to the television do.

In a fifth aspect, the present principles relate to a sound rendering device configured to connect to a television, wherein the sound rendering device receives a first audio signal comprising at least a left channel, a right channel and a center channel, A decoder configured to decode and obtain channels, a left channel and a right channel coupled to the left and right speakers coupled to the sound rendering device, a decoder configured to process the center channel to obtain a second left channel and a second right channel, A processor unit, and an encoder configured to encode the second left channel and the second right channel into a second audio signal for output to a television.

Various embodiments of the fourth and fifth aspects include the following.

The decoder is configured to receive audio signals from the television.

The decoder is also configured to receive the video signal, and the encoder is also configured to provide the video signal to the television. The decoder may be configured to receive a video signal and an audio signal from a source other than a television.

Preferred features of these principles will now be described, by way of non-limiting example, with reference to the accompanying drawings.
Figure 1 shows a conventional 3.1 home cinema system.
2 shows a first example of a home cinema system according to the present principles.
Figure 3 shows a second example of a home cinema system according to the present principles.
Figure 4 shows a first embodiment of the first example shown in Figure 2 in accordance with the present principles.
Fig. 5 shows a modification of the first embodiment of the first example shown in Fig. 2 according to the present principles.
Figure 6 shows a second embodiment of the first example shown in Figure 2 in accordance with the present principles.
Figure 7 shows a first embodiment of the second example shown in Figure 3 in accordance with the present principles.
Fig. 8 shows a modification of the first embodiment of the second example shown in Fig. 3 according to the present principles.
Figure 9 illustrates a method for activating central speaker emulation in a television using DDC and CEC for a home cinema device in accordance with the present principles.
Figure 10 illustrates a method for activating central speaker emulation on a television using a CEC for a home cinema device in accordance with the present principles.

While the present description will illustrate the principles in the 3.1 home cinema system, it will be appreciated that these principles also apply to other configurations such as 5.1 and 7.1.

According to these principles, a television is coupled to a home cinema device. The speakers connected to the home cinema device are configured to function as a right speaker and a left speaker, and the left and right speakers of the television are configured to render audio as a center speaker of the home cinema system. The base may be rendered by a base speaker connected to the home cinema device or by a base speaker of the television, or both.

The home cinema device may include one or more of the speakers so that when the present description refers to a plurality of speakers coupled to a home cinema system (or similar expressions), at least one of these speakers is a home cinema Gt; device. ≪ / RTI >

2 shows a first example of a home cinema system 200 according to the present principles. A television 210 including internal speakers 215 is coupled to a source 220 of audiovisual content, such as an antenna, a Blu-ray disc player, a decoder or a set-top box, and a home cinema device 230, 230 are sequentially coupled to a plurality of speakers 240 in two (if no possible base speaker is counted) in the exemplary 3.1 configuration.

Source 220 provides audio or audiovisual content, i.e., audio and video, to a television 210 that renders sound on internal speakers 215 and television 210 provides ARC audio signal 250 to a home cinema device And then the home cinema device 230 sends a plurality of audio signals 260, typically one audio signal per speaker, to the plurality of speakers 240. The plurality of audio signals 260, Television 210 and home cinema device 230 also exchange control information 270, such as consumer electronics control (CEC) and DDC information, for example. CEC and ARC are defined in HDMI version 1.4 or later. Various embodiments of the first example will be described below.

FIG. 3 illustrates a second example of a home cinema system 300 in accordance with the present principles. The television 310 including the internal speakers 315 is coupled to the home cinema device 330 and the home cinema device 330 is connected to a plurality of speakers 2 in the exemplary 3.1 configuration (340). In a second example, the home cinema device 330 is coupled to a source 320 of audio or audiovisual content, such as a Blu-ray Disc player, set-top box, or Internet connection.

The source 320 provides audiovisual content, i.e., audio and video, to the home cinema device 330 and the home cinema device 330 provides a plurality of audio signals 360, typically one audio signal per speaker, And provides the audiovisual signal 350 to the television 310 for rendering on the internal speakers 315 of the television 310. [ Television 310 and home cinema device 330 also exchange control information 370, such as consumer electronics control (CEC) and DDC information, for example.

Figure 4 shows a first embodiment of the signal flow in the example shown in Figure 2 in accordance with the present principles. Television 210 receives audiovisual content encoded from a source (not shown), and decodes audiovisual content encoded in at least one decoder 410, typically audio and video are decoded in separate decoders. The decoded video is output to a display (not shown) of the television 210 in a conventional manner. However, the decoder is also configured to decode the received 3.1 audio and send the decoded central audio channel to an audio digital signal processor (DSP) 420, And an inner left channel and an inner right channel, respectively, to be sent to the left and right speakers 215. In this way, the inner left and right speakers 215 emulate the center speaker. In addition, the decoder may be configured to send the decoded base channel to the internal base speaker 215 via the audio DSP 420. The decoder is also configured to send the decoded left and right channels (and possibly the decoded base channel) to the encoder 430 which in turn converts these channels into an audio signal 250 such as an HDMI-ARC signal ) And output the audio signal 250. [0031]

The output audio signal 250 is for a home cinema device 230 configured to process the received audio signal 250 in a conventional manner and the home cinema device 230 decodes the audio signal 250 to generate a decoded audio signal 250. [ The decoded audio signals are provided to an audio DSP 450 and the output of the audio DSP 450 is output to a plurality of speakers 240 to which the home cinema device 230 is connected, A plurality of audio signals 260 for a plurality of audio signals. In this example, the plurality of speakers 240 includes a left speaker, a right speaker, and possibly a base speaker. The center channel has no signal, so the corresponding output can be automatically silenced.

As in other embodiments, audio DSPs 420 and 450 are configured to mix and separate input audio signals. Such DSPs may equalize audio by selectively mixing components from different or different audio channels for all channels, for example, according to user settings. The DSPs can further increase or decrease the delay applied to the audio channels to achieve, for example, lip-sync. This delay can be set to zero (meaning no delay), or it can be set to a fixed delay that can be set manually or possibly via HDMI commands by the processor.

As can be seen, the sound for the base speaker may be rendered by the base speaker 215 of the television 210 or by the base speaker connected to the home cinema device 230, depending on the implementation, It is possible to render the sound for the base speaker in the same manner.

Due to re-encoding in the encoder of the audio signal where only the left and right channels are active (the base and center channels are set to zero), the home cinema device 230 processes the rendering of the right and left audio channels with external speakers It is not necessary to receive any CEC information for this purpose. At the same time, the television automatically renders the center channel (and possibly the base channel) on its internal speakers.

5, the decoder 510 is configured to send the received encoded 3.1 audio signal to the decoder 540 of the home cinema device 230 via the output interface 530, Lt; RTI ID = 0.0 > 430 < / RTI > In the television 210, the audio DSP 520 functions as the audio DSP 420 in Fig. 4, and the audio DSP 550 in the home cinema device functions as the audio DSP 450 in Fig. The variant further includes a CEC connection 270 in addition to the HDMI ARC connection 250.

In the embodiments of FIGS. 4 and 5, it is desirable to inform the home cinema device 230 that the decoder 210 is rendering the center channel (and possibly the base channel) itself, Both can be sent using Consumer Electronics Control (CEC) or Display Data Channel (DDC) implemented in the HDMI standard version 1.4 or higher. Due to the received information, the home cinema device 230 can mute the channels rendered by the television 210.

Figure 6 shows a second embodiment of the signal flow in the example shown in Figure 2 in accordance with the present principles. 4, television 210 receives encoded audiovisual content from a source (not shown), decodes at least one encoded video content in at least one decoder 610, and outputs the decoded video to television 210 To a display (not shown).

However, the decoder 610 is configured to output the encoded 3.1 audio content to the home cinema device 230 via the output interface 615, for example as an HDMI-ARC signal. The decoder 610 also sends information using, for example, CEC or DDC to inform the home cinema device 230 that the television 210 will render a center channel (and a base channel if it is a base channel) .

The home cinema device 230 includes a decoder 620 configured to generate a plurality of audio channels as described with reference to FIG. A decoder 620 using received information about the channels to be rendered by the television is preferably configured to provide a central channel (and possibly a base channel) to the encoder 630 via the audio DSP 640. Using the audio DSP 640 may enable flexibility (e. G., Fading) of the audio channels in a manner different from that provided by the source.

The encoder 630 is configured to encode a central (and possibly base) channel into an audio signal, e.g., an HDMI audio signal, and output an audio signal for the television 210. [

The television 210 includes a second decoder 650 configured to decode an audio signal received from the home cinema device 230, and the audio signal is processed to obtain a center channel, and possibly a base channel. The second decoder 650 is configured to output the decoded audio channels to the audio DSP 660 and the audio DSP 660 is configured to provide the processed channels to the respective speakers 215, An inner left speaker and an inner right speaker, and possibly a base channel to an inner bass speaker. As already mentioned with reference to FIG. 4, the base channel may be rendered on the base speaker 215 of the television, the base speaker connected to the home cinema device, or both.

Alternatively, the audio DSP 640 is configured to encode the center (and possibly base) channel to the reconstructed left and right channels (and possibly the base channel). The encoder is configured to encode these channels into a 2.0 or 2.1 audio signal, which is the output for television 210. The second decoder 650 is configured to decode the received audio signal into a reconstructed left channel provided to the inner left speaker, a reconstructed right channel provided to the inner right speaker, and possibly a bass channel provided to the inner bass speaker do. It is possible to drive the inner left and right speakers 215 of the television 210 individually by using the audio DSP 640 since it is possible to switch the output of the center channel to the inner left and right speakers, 210 < / RTI >

Figure 7 shows a first embodiment of the signal flow in the example shown in Figure 3 in accordance with the present principles. The home cinema device 330 is configured to receive an audiovisual signal encoded from a source (not shown). The decoder 710 in the home cinema device 330 decodes at least the left channel, the right channel and possibly the base channel of the audio signal and outputs the decoded channels to respective speakers of the plurality of speakers 340 . The decoder 710 may also be configured to decode a central (and possibly base) channel and provide it (or these) to the audio DSP 720, which processes the channel (s) And provide the processed channel (s) to the encoder 730 and provide the base channel to the base speaker if it is rendered by the base speaker of the plurality of speakers 340. Encoder 730 encodes the remixed channel (s), i.e., the center channel and possibly the base channel, and outputs these channels as a 2.0 or 2.1 signal with the encoded video signal received at signals 350 and 370, Possibly to the television 310 as an HDMI signal.

The television 310 includes a decoder 740 configured to decode the received signal. The video signal is decoded and rendered as described above. Decoder 740 is configured to decode the audio signal to a center channel, and possibly a base channel. The base channel may be provided to the internal base speaker 315. By using the information in the received signal 370, the decoder 740 also mutes the output normally used to provide the left channel and right channel, and routes the processed center channel to the inner left speaker and inner right speaker 315, And to output to the audio DSP 750 configured to output to all of the channels. The audio DSP 750 may also process the bass channel and output the processed audio to the base speaker 315 as well.

8, the audio DSP 820 receives the center channel and the base channel from the decoder 810 and processes the center channel (and possibly the base channel) (And possibly the base channel B) to the encoder 830, instead of the same center channel, as shown in FIG. In this case, the decoder 840 of the television 310 uses the information in the received signal 370 to operate in the conventional manner, i.e., the left channel (reconstructed) and the (reconstructed) right channel, To the audio DSP 850 configured to process the processed channels and provide the processed channels to the inner left speaker and the inner right speaker 315.

It should be noted that the audio DSP 820 may be included in the decoder 810.

It should also be noted that these principles also operate on audio-only sources that provide the user with sound that is processed and output in the same manner.

It should also be noted that these principles also operate while using the HEC (HDMI Ethernet channel).

It should also be noted that the decoder may comprise at least a hardware interface configured to receive the audio signal, and the encoder may comprise a hardware interface configured to output the encoded audio signal.

It has already been mentioned that television and home cinema devices can exchange information about sound rendering capabilities using consumer electronics control (CEC) or display data channels (DDC). We will now discuss this further.

The television may access the home cinema device and store the DDC table to be provided in the firmware when two devices are connected (e.g., after power-up, or after a hot plug, also referred to as hot plugging). Although the fields and information in the DDC table are defined in the HDMI standard, this standard allows proprietary information and future development is also possible.

For purposes of these principles, the DDC table may store the following information.

In addition, these principles use two new CEC commands, which are permitted by the HDMI standard version 1.4, CEC appendix, but can also be easily implemented in future HDMI standards.

· <Speaker Mode Request> ["Center"] enables the home cinema device to activate the center speaker emulation on the television.

· <Set TV Speaker Center> ["On"] enables the television to respond to center speaker emulation being activated.

Figure 9 illustrates a method for activating central speaker emulation in a television using DDC and CEC for a home cinema device in accordance with the present principles.

In step 905, the home cinema device receives the DDC information from the television.

In step 910, the user initiates central speaker emulation on the television, and in step 915 the television sends a message < request system audio mode > [physical address] to the home cinema device. If the user has already activated the center speaker emulation, step 910 is not performed and step 915 is performed automatically. In response, the home cinema device switches its input to a physical address in step 920 and unmutes the speakers in step 930. Steps 910-930 are described on page 279 of the HDMI 1.4 standard, CEC,

At step 935, the home cinema device sends <speaker mode request> ["center"] to the television to enable center speaker emulation on the television. The television unmutes the speakers at step 950 and returns to step 955 to set < center the TV speakers > ["on"] to indicate to the home cinema device that center speaker emulation is activated.

Then, the user increases the volume, for example, in step 960 to control the output, which, as shown in the HDMI 1.4 standard, page 282, CEC, 31, > [Volume Up] message to the home cinema system.

Figure 10 illustrates a method for activating central speaker emulation on a television using a CEC for a home cinema device in accordance with the present principles. This enables activation of the center speaker emulation on the television when the DDC does not contain enough information.

This method starts with steps 910-940 already described with reference to FIG.

The home cinema system then sends a <Speaker Request> broadcast message to the television at step 1042 to query the television for at least its emulation capabilities. If the television is able to emulate the center speaker, the television replies < center > &gt; at step 1044 to inform the home cinema system of this capability. Subsequently, the home cinema system sends <speaker mode request> ["center"] to the television at step 1045 to enable central speaker emulation on the television. The television unmutes the speakers at step 1050 and returns &lt; ON &gt; &lt; &lt; ON &gt; &gt; at step 1055 to indicate to the home cinema device that central speaker emulation is activated. Steps 1045-1055 are similar to steps 945-955 in FIG.

As shown in FIG. 9, the user then controls the output by, for example, increasing the volume in step 1060, which, as shown in FIG. 31, page 282 of the HDMI 1.4 standard, This sends the <user control click> [volume up] message to the home cinema system and so on.

It will be appreciated that the center speaker may also be emulated by a device other than a television, for example a sound bar. In this case, a device that sends a central channel for rendering, i. E. A television in some embodiments, a home cinema device in other embodiments, is configured to provide a central channel to these other devices. Alternatively, the television may output the center channel to another device even when receiving the center channel from the home cinema device.

Throughout the description, wired HDMI is used as a non-limiting example, but it will be appreciated that other suitable techniques may also be used. For example, these principles are particularly well suited for wireless HDMI versions, but will also work with optical HDMI versions.

It will be appreciated by those of ordinary skill in the art that the devices shown are greatly simplified due to simplicity and that the actual devices will additionally include features such as internal connections and power supply devices.

As can be seen, these principles may enable central speaker emulation by television in a home cinema system.

It is to be understood that elements shown in the figures may be implemented in various forms of hardware, software, or a combination thereof. Preferably, these elements are implemented in a combination of hardware and software on one or more suitably programmed general purpose devices that may include a processor, memory and input / output interfaces. In this specification, the phrase "coupled" is defined to mean directly connected or indirectly connected through one or more intermediate components. These intermediate components may include both hardware and software based components.

This description illustrates the principles of the present disclosure. Thus, those of ordinary skill in the relevant art will appreciate that, although not explicitly described or shown herein, it is contemplated that the principles of the present disclosure may be embodied and may fall within the scope of the following claims.

All examples and conditional language recited herein are intended for educational purposes that will assist the reader in understanding the principles and concepts of the present disclosure as contributed by the inventor to the advancement of the related art, And should not be construed as limited to the examples and conditions in which it is made.

Moreover, all statements herein reciting principles, aspects, and embodiments of the disclosure, as well as specific examples thereof, are intended to cover both structural and functional equivalents thereof. Additionally, such equivalents are intended to include both currently known equivalents as well as equivalents developed in the future, that is, any elements that are developed to perform the same function regardless of structure.

Accordingly, those of ordinary skill in the pertinent art will appreciate that, for example, the block diagrams presented herein represent exemplary circuit diagrams embodying the principles of the present disclosure. Similarly, any of the flowcharts, flowcharts, state transitions, pseudo code, etc. may be represented in a computer readable medium and may be stored in a computer or processor, whether or not such computer or processor is explicitly shown Lt; RTI ID = 0.0 &gt; and / or &lt; / RTI &gt;

The functions of the various elements shown in the figures may be provided through use of dedicated hardware as well as hardware capable of executing software in connection with suitable software. When provided by a processor, the functions may be provided by a single dedicated processor, by a single shared processor, or by a plurality of individual processors, some of which may be shared. Further, the explicit use of the term " processor "or" controller "should not be construed to refer exclusively to hardware capable of executing software and includes, without limitation, digital signal processor (DSP) May implicitly include memory (ROM), random access memory (RAM), and non-volatile storage.

Other hardware, conventional and / or custom, may also be included. Similarly, any of the switches shown in the figures are merely conceptual. Their functions can be performed through the operation of program logic, through dedicated logic, through program control and dedicated logic, computation, through the interaction of enabling / disabling, or even manually, It is selectable by the implementer as will be understood in detail.

In the claims hereof, any element expressed as a means for performing the specified function may be, for example, a) a combination of circuit elements performing the function, or b) executing the software in order to perform the function Including any form of software, including firmware, microcode, etc., in combination with suitable circuitry for performing the functions described herein. The present disclosure as defined by these claims is based on the fact that the functionality provided by the various mentioned means is combined and merged together in the manner required by the claims. Accordingly, any means capable of providing such functionality are considered equivalents to those shown herein.

Claims (14)

A television (210) configured to connect to a sound rendering device (230)
Configured to decode a first audio signal comprising at least a left channel (L), a right channel (R) and a center channel (C) and to provide a decoded center channel for rendering on first speakers (215) A decoder 410; And
An encoder 430 for encoding a decoded left channel and a decoded right channel to obtain a second audio signal for output to the sound rendering device 230 to render the sound on the second speakers 240,
Gt; 210 &lt; / RTI &gt; A television (210) configured to connect to a sound rendering device (230)
A decoder configured to decode an audio signal including at least a left channel L, a right channel R and a center channel C and to provide a decoded center channel for rendering on the first speakers 215 510); And
An output interface 530 configured to output the audio signal to the sound rendering device 230 to render the sound on the second speakers 240,
Gt; 210 &lt; / RTI &gt; A television (210) configured to connect to a sound rendering device (230)
A unit (610) configured to receive a first audio signal comprising at least a left channel (L), a right channel (R) and a center channel (C);
An output interface (615) configured to output the first audio signal to the sound rendering device (230) to render the sound on the second speakers (240); And
A second audio signal from the sound rendering device 230, the second audio signal comprising an additional left channel and an additional right channel obtained from the center channel (C), or from the center channel, (650) configured to decode the second audio signal to provide at least one audio channel for rendering on a first speaker (215)
Gt; 210 &lt; / RTI &gt; The method of claim 3,
The second audio signal includes the center channel C and the television 210 is configured to process the center channel for rendering on the left speaker and the right speaker of the first speakers 215. [ And a processor unit (660). The method of claim 3,
The second audio signal includes the additional left channel and the additional right channel and the decoder 650 provides an additional left channel decoded from the first speakers 215 to the left speaker, Lt; RTI ID = 0.0 &gt; right &lt; / RTI &gt; channel. 4. The method according to any one of claims 1 to 3,
Further comprising a digital sound processor unit (420, 520, 660) for sound processing of audio channels to be provided to the first speakers (215). 4. The method according to any one of claims 1 to 3,
The first speakers (215) include internal left and right speakers of the television (210). 4. The method according to any one of claims 1 to 3,
The first speakers (215) include left and right speakers of a sound bar outside the television (210). 4. The method according to any one of claims 1 to 3,
Wherein the first audio signal or the second audio signal further comprises a base channel (B) to be rendered on a base speaker among the first speakers (215). A sound rendering device (230, 330) configured to connect to a television (210, 310)
A method for receiving a first audio signal comprising at least a left channel (L), a right channel (R) and a center channel (C), decoding the first audio signal to obtain the channels, A decoder (620, 710) configured to provide a left speaker and a right speaker coupled to the sound rendering device; And
An encoder (630, 730) configured to encode the center channel into a second audio signal for output to the television (210, 310)
(230, 330). A sound rendering device (230, 330) configured to connect to a television (210, 310)
A method for receiving a first audio signal comprising at least a left channel (L), a right channel (R) and a center channel (C), decoding the first audio signal to obtain the channels, A decoder (620, 810) configured to provide a left speaker and a right speaker coupled to the sound rendering device;
A digital sound processor unit (640, 820) configured to process the center channel to obtain a second left channel and a second right channel; And
An encoder (630, 830) configured to encode the second left channel and the second right channel into a second audio signal for output to the television (210)
(230, 330). The method according to claim 10 or 11,
Wherein the decoder (620) is configured to receive the audio signal from the television (210). The method according to claim 10 or 11,
Wherein the decoder (710, 810) is further configured to receive a video signal, and wherein the encoder (730, 830) is further configured to provide the video signal to the television (310). 14. The method of claim 13,
The decoder (710, 810) is configured to receive the video signal and the audio signal from a source other than the television (310).

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